Aluminum oxide is a very hard mineral that maintains sharp points on the grains much longer than natural abrasives such as emery or garnet. The abrasive grains are adhered to the sandpaper with some space between them, known as open-coat construction, to minimize the buildup of dust on the surface of the paper, which would otherwise load the abrasive points. Loading often results from sanding soft materials and can clog the abrasive, shortening the usable life of the sandpaper sheet.
3M 02117, Paper Sheet 346U, 50 D-weight, 9 in x 11 in, 7000120222
$1.29
Factory Stock, 7-10 Day Leadtime
3M Paper Sheet 346U is constructed of aluminum oxide and comes in a range of grades and sizes to accommodate many different projects. The paper backing is durable for coarse sanding, yet flexible enough to be used on curved surfaces. Its cut-rate and durability make this an excellent choice for blending the joints of connecting pieces in wood- and metal-working.

3M 34576, Cubitron II Net Sheet Roll, 220+, 115 mm x 10 m, 7100247509, 6 Rolls/Case
3M 24049, Wetordry Cloth Disc 281W, P1000 YF-weight, 8 in x NH, Die 800JM, 7000045052
3M 34567, Cubitron II Net Sheet Roll, 320+, 70 mm x 10 m, 7100247338, 6 Rolls/Case
3M 26404, Cloth Belt 341D, 50 X-weight, 2-1/2 in x 60 in, Film-lok, Single-flex, 7010361743, 50 per case
Standard Abrasives 700743, Cartridge RoII Mandrel, 1/8 in x 3/4 in x 1/8 in x 1 in x 2-3/4 in CM-4, 7010368728
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit
3M 76523, Cloth Belt 777F, 50 YF-weight, 2 in x 72 in, Film-lok, Single-flex, 7000118456, 50 per case
3M 17228, Heavy Duty Duct Tape DT11, Black, 48 mm x 54.8 m, 11 mil, 7100158377
Standard Abrasives 863198, Quick Change TR A/O Unitized Wheel, 631, 3 in x 1/4 in, 7010330152
3M 34561, Cubitron II Net Sheet Roll, 80+, 70 mm x 10 m, 7100247502, 6 Rolls/Case
3M 66615, Cloth Belt 341D, 50 X-weight, 3 in x 21 in, Fabri-lok, Single-flex, 7000118855, 25 per case
3M 26568, Cloth Belt 341D, 50 X-weight, 2 in x 48 in, Film-lok, Single-flex, 7010361745, 50 per case
3M 06728, Premium Plastic Sheeting with 233+ Masking Tape (36 mm), 16
ft x 400 ft, 7100139893
3M 30289, Trizact Hookit Finishing Foam Sheet, 5000, 2-3/4 in x 5-1/2 in, 7000120135, 15 Sheets/Carton
3M 35519, Rubber Sanding Block, 2-3/4 in x 5 in, 7000126109
3M 34566, Cubitron II Net Sheet Roll, 240+, 70 mm x 10 m, 7100247511, 6 Rolls/Case
3M 25124, Scotch-Weld Threadlocker TL42, Blue, 1 L Bottle, 7010310189, 1/case
3M 06742, Overspray Protective Sheeting, 20 ft x 250 ft, 7000120043 
